Home / 2,717.48-4,075.56-938.40

Finding the Fourth Proportional to 2,717.48, 4,075.56 and 938.40

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Solution

The fourth proportional to 2,717.48, 4,075.56 and 938.40 is: 1,407.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,717.48 : 4,075.56 = 938.40 : x
  2. Step 2: Convert to fraction form
    2,717.48/4,075.56 = 938.40/x
  3. Step 3: Cross multiply
    2,717.48x = 4,075.56 × 938.40
  4. Step 4: Simplify right side
    2,717.48x = 3,824,505.50
  5. Step 5: Solve for x
    x = 3,824,505.50/2,717.48
  6. Step 6: Final answer
    x = 1,407.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.